Care and Maintenance

Most modern batteries require no periodic maintenance other than to keep the connections to the terminal clean and the fixing bolts tight. You can coat the terminals in petroleum jelly to prevent build up of corrosive material. In the event of the loss of any electrolyte in the cells, they can be topped up with distilled or demineralised water until the plates are covered.

Eventually the internal condition of the battery deteriorates until it is unable to hold a charge and the battery has to be replaced. On a petrol engine car the first symptom of this is usually that it feels sluggish when you start the car. On a diesel engine car, it will usually just fail to start due to the higher cranking power needed for diesel.

In-car entertainment and other electrical devices put your battery under even more strain meaning that it’s now more important than ever to have your battery checked. Every day around 1,000 vehicles break down due to battery failure and faulty batteries are one of the main reasons for breakdown calls.

Your local National technician can carry out a FREE battery check which only takes a few minutes and will advise you on exactly the right type of battery for your car depending on the engine size and the typical conditions in which you use your car.

So don’t get caught out – arrange for your battery check by calling 0800 432 0460 to avoid becoming a ‘breakdown’ statistic.

Even the best battery can fail - and the consequences can be inconvenient and expensive! That's where National's superb battery guarantee comes in, offering total peace of mind. Should any fault occur with your battery National offer a full range of guarantees. At National - we recommend and fit only the best and most suitable battery for your car.